CN1130276C - Screwdriver bit and its combination with screw - Google Patents
Screwdriver bit and its combination with screw Download PDFInfo
- Publication number
- CN1130276C CN1130276C CN99803241A CN99803241A CN1130276C CN 1130276 C CN1130276 C CN 1130276C CN 99803241 A CN99803241 A CN 99803241A CN 99803241 A CN99803241 A CN 99803241A CN 1130276 C CN1130276 C CN 1130276C
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- screw
- cutter head
- driver bit
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- wall portion
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- 239000002131 composite material Substances 0.000 claims description 25
- 230000001154 acute effect Effects 0.000 claims description 7
- 210000003141 lower extremity Anatomy 0.000 claims description 7
- 230000003321 amplification Effects 0.000 description 16
- 238000003199 nucleic acid amplification method Methods 0.000 description 16
- NOQGZXFMHARMLW-UHFFFAOYSA-N Daminozide Chemical group CN(C)NC(=O)CCC(O)=O NOQGZXFMHARMLW-UHFFFAOYSA-N 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 7
- 230000001771 impaired effect Effects 0.000 description 6
- 230000014509 gene expression Effects 0.000 description 5
- 230000000295 complement effect Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 206010016256 fatigue Diseases 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
- F16B23/0092—Specially shaped nuts or heads of bolts or screws for rotations by a tool with a head engageable by two or more different tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B15/00—Screwdrivers
- B25B15/001—Screwdrivers characterised by material or shape of the tool bit
- B25B15/004—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section
- B25B15/005—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section with cross- or star-shaped cross-section
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
- F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
- F16B23/0023—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool substantially cross-shaped
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Dowels (AREA)
- Connection Of Plates (AREA)
- Earth Drilling (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
- Joining Of Building Structures In Genera (AREA)
- Surgical Instruments (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
Abstract
A screwdriver bit (50) fitted to a screw wherein generally vertical end wall parts of a specified depth are formed in the bit fitting grooves of a screw head part at the end edge parts, a generally flat bottom part is formed directing from the lower edge part of the vertical end wall parts to the center part of a screw neck part, and a conical bottom surface is formed at its center part, comprising flat blade parts (52) forming, at the top end parts, generally vertical end edge parts fitted into the bit fitting grooves of the screw head part along the vertical end wall parts, the top end surfaces of the flat blade parts being formed in a conical protruded part (54) having an inclination angle [theta] of approx. 1 to 45 DEG relative to the horizontal plane, whereas the screw having stage parts at the end edge parts of the bit fitting grooves of the screw head part, forming inclined groove parts extendedly directing from these stage parts to the center part of the screw neck part, forming a generally conical bottom surface at its bottom part, and forming wall parts recessed inward from a vertical plane at the end edge parts of the bit fitting grooves through a specified depth.
Description
Technical field
The present invention relates to a kind of driver bit and a kind of screw that therewith uses.Particularly relate to the composite structure between a kind of driver bit and a kind of and the screw that this driver bit is used, this composite structure can make between the cross recess that is formed on screw head or cutter head matching slot and the driver bit that is used to cooperate this groove and realize drive fit, and can tighten to fast and reliable and unscrew screw by transmitting suitable moment.
Background technique
Usually plain screw known to and driver bit composite structure are shown in Figure 13 to 16.That is to say that Figure 13 and 14 has shown a band cross recessed plain screw; Shown a kind of screw-driver that is used to the cross recessed screw among Figure 15; And shown state when above-mentioned screw and driver bit match each other among Figure 16.
The screw of technology formerly 10 shown in Figure 13 has a cross recess 12 on its screw head 10a.Have constant skewed slot part 12a on the cross recess 12, they stretch towards core from the end of a screw neck 10b respectively.Cross recess 12 also has a conical shaped bottom surface 14 that tilts gradually in its bottom.By the way, code reference number 13 expressions form in the wedge side wall part of 12 of adjacent cross recesses.That is to say that wedge side wall part 13 is used for interlock and contacts blade on the driver bit as described later.In addition, be formed with wedge shape junction surface 17a or 17b respectively in the adjoining angle portion of each skewed slot part 12a, they are stretched over the edge of opening part of the cross recess 12 of screw head 10a from the position of conical bottom surface 14.These wedge shape junction surface 17a or 17b also can contact with a position interlock on the blade of described driver bit hereinafter.
On the other hand, have blade 22 on the driver bit of technology formerly 20 that shows among Figure 15 to cooperate the cross recess 12 on the above-mentioned screw 10.Driver bit 20 also has and extends blade 22a, and they extend respectively to cooperate from above-mentioned cross recess 12 ends the shape of the skewed slot part 12a that stretches towards screw neck 10b core.By the way, code reference number 23 expression forms in above-mentioned each blade 22 or extends wedge side wall part on the both side surface of blade 22a.That is to say that wedge side wall part 23 is used for the wedge side wall part 13 that the interlock contact forms in the cross recess 12 of above-mentioned screw 10.
According to the composite structure between the driver bit of formerly technology screw and shaping in the above described manner, when screw 10 and driver bit 20 match each other together as shown in figure 16, the blade 22 of driver bit 20 and extension blade 22a are engaged in respectively among the skewed slot part 12a of cross recess 12, as previously mentioned.Above-mentioned blade 22 and 23 of wall portion that extend blade 22a touch the wedge side wall part 13 in the cross recess 12 of screw 10.Like this, rotary screw cutter head 20 can be with predetermined transmission of torque to screw 10.That is to say, can on required target object, tighten and unscrew screw.
Yet according to the composite structure between the driver bit 20 of formerly technology screw 10 and shaping in the above described manner, the cross recess 12 among the screw head 10a has constituted the skewed slot part 12a that stretches towards its core from the end of screw neck 10b.On the other hand, for corresponding driver bit 20, the spine of extending blade 22a is cooperating the shape of above-mentioned skewed slot part 12a, screw-driver is coupled in the above-mentioned cross recess 12.In addition, the spine of extension blade 22a begins to widen backward from its distal portions.In addition, be formed on wedge side wall part 13 in the cross recess 12 that wedge side wall part 23 on each blade 22 of driver bit 20 is formed in contact on screw 10.Like this, because above-mentioned driver bit 20 contacts with the complete each other wedge shape of above-mentioned cross recess 12, therefore rotate the far-end that above-mentioned driver bit 20 will cause driver bit 20 along a predetermined direction and outwards jump out (shown in the arrow among Figure 16), thereby cause so-called " deviating from phenomenon " along the inclined surface of the skewed slot part 12a of above-mentioned cross recess 12.
Specifically, as shown in figure 14, formerly the cross recessed shape in the technology screw forms by this way, and promptly the width of each cross recess 12 is relatively greater than the spine of the extension blade 22a of driver bit 20, so that make the far-end and the cross recess interlock of driver bit 20.On the other hand, it is relative less with the area of wedge shape junction surface 17a, 17b to be formed on the wedge side wall part 13 in boundary part between the adjacent cross recess 12,12 or bight.Like this, when the above-mentioned driver bit 20 of rotation, will cause that the very big stress of value is loaded on above-mentioned wedge side wall part 13 and wedge shape junction surface 17a, the 17b.Therefore, as shown in figure 14, for dash area 15, powerful fastening resistance will cause above-mentioned wedge side wall part 13 and wedge shape junction surface 17a, 17b impaired gradually.Like this, along with the increase of impaired part (dash area 15), will make above-mentioned driver bit 20 phenomenon frequently occur deviating from, thereby can not realize tightening operation.
From above each point as can be known, when rotary screw cutter head 20, need apply powerful thrust cutter head is leaned on skewed slot part 12a, phenomenon occur deviating to prevent above-mentioned driver bit 20 to driver bit 20.Yet, compress cutter head like this and will cause target object, particularly meticulous parts break or damage, although when target object be the problem that do not have during such as rigid bodies such as metals.
In addition, if above-mentionedly deviate from phenomenon, cutter head distal portions so, i.e. the blade 22 and the wearing and tearing of extending blade 22a can be quickened.And wearing and tearing can cause the more above-mentioned phenomenon of deviating from, thereby cause the damage of screw slots to increase.
In addition, apply powerful thrust to above-mentioned driver bit 20 and can prevent the above-mentioned phenomenon of deviating from effectively.Yet this will cause can't be to the accurate moment of torsion of screw transmission, and different operators can apply different thrust to driver bit 20.Consequently, for different operators, the moment of torsion that is used for fastening screw trip bolt has very big difference.
In addition, if be screwed on the target object of making by synthetic resin or analog, then except the spin friction power of screw, also can increase a frictional force that causes because of thrust from the merit screw.This will cause heat to produce such degree in a large number, promptly can make the hardness that is screwed into part of target object reduce, thereby cause that screw is lax or target object is impaired.
On the other hand, when tightening screw by hand, again driver bit 20 being pressed in rotary screw cutter head 20 needs the operator to pay a large amount of effort on the screw, thereby causes the operator tired out.
In addition, according to the composite structure of technology screw formerly 10 with driver bit 20, if screw is tightened by manual tool or electric tool, then when the far-end with cutter head is coupled in the screw slots, is difficult in rotary screw again axis with screw and keeps suitable with the axis of driver bit and aim at.Therefore, if screw axis with respect to the driver bit axis tilt, is then not only above-mentionedly deviate from phenomenon, and screw slots are impaired all can frequently occur.
In addition, when unscrewing screw, phenomenon and screw slots damaged phenomenon also can appear deviating from, this and noted earlier similar.Yet, in this case, screw can't be back-outed, thereby cause and the position that needs on the target object to back out screw must be staved.Particularly, when dust had blocked screw slots, above-mentioned condition can occur more continually.
From above each point, the applicant's past attempts proposes and can prevent effectively that with the driver bit composite structure driver bit that can occur usually from deviating from phenomenon and damaged screw (Japan Patent open source literature No. puts down into 8-145024 and puts down into 9-177743 with No.) by screw.In addition, this combination can total energy realizes suitable and tightens fast, thereby can significantly improve and tighten efficient, even damage has appearred in the cutter head matching slot on the screw.This can realize by the slot part in the cutter head matching slot that improves the screw in screw and the driver bit composite structure.
Equal into screw that 8-145024 forms and driver bit composite structure shown in Figure 12 (b) according to Japan Patent open source literature No.That is to say that the vertical end wall portion 32a with predetermined depth is formed on the end of the cutter head matching slot 32 of screw head 30a.Horizontal bench part 32b begins to be shaped from vertical end wall portion.The core of skewed slot part 32c from these horizontal bench parts 32b towards screw neck 30b stretches and forms.Perhaps, the core towards screw neck 30b stretches from above-mentioned vertical end wall portion also can to make wedge shape or crooked slot part.In addition, conical shaped bottom surface 34 is formed on the bottom of slot part.So just formed screw to cooperate driver bit, the latter comprises an alar part to be engaged near above-mentioned step part or curved slot part (please refer to Figure 12 (a)).
That is to say, please refer to Figure 12 (b), be formed on the square edge part 42a on the alar part 42 of driver bit 40 and extend among the horizontal bench part 32b and skewed slot part 32c of cutter head matching slot 32 that alar part 42b is engaged in screw 30 respectively.Afterwards, the wall portion 43 of above-mentioned alar part 42 with extend alar part 42b and will contact with the wall portion 33 of the cutter head matching slot 32 of screw 30.Therefore, can be to screw 30 by rotary screw cutter head 40 with predetermined transmission of torque.
Equal into screw that 9-177743 forms and driver bit composite structure shown in Figure 12 (c) according to Japan Patent open source literature No..That is to say that the vertical end wall portion 32a with predetermined depth is formed on the end of the cutter head matching slot 32 of screw head 30a.Non-planar bottom forms towards screw core protuberance from the lower limb part of vertical end wall portion.The core of skewed slot part 32c from the bump of non-planar bottom towards the screw neck stretches.In addition, conical shaped bottom surface is formed on the bottom of slot part.So just formed screw to cooperate the driver bit (please refer to Figure 12 (a)) that forms in mode noted earlier.
That is to say, please refer to Figure 12 (c), be formed among the non-planar bottom 32b and skewed slot part 32c in the cutter head matching slot 32 that horizontal surface part 42a on the flat blade 42 of driver bit 40 and flange 42b be engaged in screw 30 respectively.Afterwards, the wall portion 43 of above-mentioned alar part 42 and flange 42b will contact with the wall portion 33 of the cutter head matching slot 32 of screw 30.Therefore, can be to screw 30 by rotary screw cutter head 40 with predetermined transmission of torque.
For the driver bit 40 according to above-mentioned every suggestion, horizontal bench part 32b and non-planar bottom 32b are formed in the cutter head matching slot 32 of screw 30.Area of contact when therefore the wall portion 43 of the alar part 42 of the wall portion 33 of cutter head matching slot 32 and driver bit 40 or flat blade 42 contacts can increase.Wedge shape area of contact when on the other hand, the alar part 42 of the skewed slot part 32c of the cutter head matching slot 32 of screw 30 and driver bit 40 or flat blade 42 contact just local with little.Therefore, can effectively prevent the phenomenon of deviating from formerly the technology screw and driver bit composite structure.
Yet, even realize gratifying smoothness between the distal portions that also still can not make driver bit according to the screw of above-mentioned suggestion and driver bit composite structure and the cutter head matching slot that is formed on screw head and cooperate fast.
That is to say, in the structure of the driver bit 40 of former proposition, have now found that, when having along the flat blade 42 and the vertical end wall portion 32a interlock mutually that is formed on above-mentioned cutter head matching slot 32 ends of the horizontal surface part 42a of approximate right angle stretching, extension, thereby be coupled in the cutter head matching slot 32 that is formed on screw 30 heads, and when rotating above-mentioned driver bit, the distal portion branch sliding friction screw head surface of above-mentioned flat blade 42, thus damage this surface.
In addition, even the far-end of above-mentioned driver bit 40 is engaged in the cutter head matching slot 32 of screw head 30a, also phenomenon can appear deviating from sometimes.That is to say, as example, in the composite structure of screw shown in driver bit shown in Figure 12 (a) and Figure 12 (b), sometimes owing to the head punch that is used for punching press cutter head matching slot 32 is worn, thereby may when screw is produced in batches, fail to be shaped out aptly from the horizontal bench part 32b that vertical end wall portion 32a stretches out with the right angle on the predetermined depth in the cutter head matching slot 32 of screw head 30a, thereby cause the right angle intersection between above-mentioned vertical end wall portion 32a and the horizontal bench part 32b partly to be risen.Be similar in this case, having now found that the far-end of above-mentioned driver bit 40 may not can fully be engaged in the cutter head matching slot 32 of screw head 30a, thereby may cause deviating from phenomenon when causing instability to be joined being incorporated in driver bit 40 rotations.
On the other hand, in the composite structure of screw shown in driver bit shown in Figure 12 (a) and Figure 12 (c), cutter head matching slot 32 comprises non-planar bottom 32b to replace above-mentioned horizontal bench part 32b, so that obtain darker size.This can be avoided the above-mentioned phenomenon of deviating from.Yet,, have now found that when utilizing driver bit 40 to carry out fastening operation, screw head 30a may be cut off because the intensity of screw neck 30b has reduced.
Therefore, the inventor has carried out further investigation and experimental production.As a result of, a kind of driver bit can cooperate such screw, this screw comprises the vertical end wall portion with predetermined depth, described wall section is formed on the end of the cutter head matching slot of a screw head, wherein the general plane bottom core from the lower limb part of vertical end wall portion towards a screw neck stretches and forms, and a conical bottom surface is formed on the core, the inventor has formed driver bit by this way, be that above-mentioned driver bit comprises flat blade, they have roughly vertical end, be engaged in the cutter head matching slot of screw head along vertical end wall portion with a distal portions with them, and a distal face of described flat blade is shaped as a conical projection, it is with respect to the angle of one 1 ° to 45 ° of substantially horizontal inclination, and preferred angle with respect to 25 ° to 35 ° of substantially horizontal inclinations.Form driver bit in this way, the far-end of driver bit and cutter head matching slot are being matched when merging the rotary screw cutter head, though the surface of above-mentioned flat blade sliding friction screw head, but have now found that this surface fully can be not impaired, and, the far-end of flat blade is engaged in the screw, thereby can prevent effectively that phenomenon from appearring deviating from driver bit when rotating.
On the other hand, the screw that cooperates with above-mentioned driver bit is a kind of like this screw, and it comprises: the end of the cutter head matching slot of screw head, and they are shaped as the vertical end wall portion with predetermined depth; Step part, they are formed on the lower edge portion office of vertical end wall portion; The skewed slot part, they tilt and form towards the core of a neck; A conical bottom surface, it is formed on the screw center, it is characterized in that the cutter head matching slot is widened from the core radially outward of screw head, and the subtended angle between the wall portion that is facing with each other on above-mentioned adjacent each groove is an acute angle that is slightly less than the right angle.When being shaped as each wall portion of outwards widening when contacting in the cutter head matching slot of the blade of driver bit and screw, have now found that the gap between blade and the groove can be as far as possible little, thereby screw and driver bit are mated together aptly, and can prevent from phenomenon reliably.
In addition, the screw that cooperates with above-mentioned driver bit is a kind of like this screw, and it comprises: step part, and they are provided on the end of cutter head matching slot of a screw head; The skewed slot part, the core towards a screw neck stretches and forms from these step parts for they; A conical shaped bottom surface, it is formed on the screw bottom; And wall portion, they are formed on the end of above-mentioned cutter head matching slot and inwardly concave a predetermined depth from vertical direction, and are recessed with the cross section of "＜" shape roughly.Have now found that in screw, the part recessed from vertical surface always can be used as a gap portion, therefore, dust particle and foreign matter can be pushed in the above-mentioned gap portion, thereby they are removed.Find that also with driver bit and screw coupling the time, the degrees of freedom of driver bit far-end has been enhanced, thereby the far-end of blade always can be complementary with screw aptly, thus can be so that tighten glibly and unscrew screw.
Therefore, a target of the present invention provides the composite structure of driver bit and screw, it can prevent because of the surperficial damage that causes of sliding friction screw head, and deviate from phenomenon can prevent reliably that driver bit from matching with screw the time, thereby always can suit and tighten screw apace, thereby significantly improve working efficiency.
Summary of the invention
In order to realize above-mentioned target, driver bit according to the present invention is a kind ofly like this to be used for screw and driver bit, this screw comprises the vertical end wall portion with predetermined depth, described wall section is formed on the end of the cutter head matching slot of a screw head, wherein the general plane bottom core from the lower limb part of vertical end wall portion towards a screw neck stretches and forms, and a conical bottom surface is formed on this core, above-mentioned driver bit is characterised in that and comprises flat blade, they have roughly vertical end, be engaged in the cutter head matching slot of screw head along vertical end wall portion with a distal portions with them, a distal face of wherein said flat blade is shaped as a conical projection, and it is with respect to the angle of one 1 ° to 45 ° of substantially horizontal inclination.
In this case, being positioned at above-mentioned conical projection on the distal face of flat blade can be shaped with respect to tilt 25 ° to 35 ° angle of substantially horizontal.
In addition, the above-mentioned conical projection that is positioned on the distal face of flat blade can be shaped like this, and promptly its trochoidal surface is made into a single conical surface or many steps conical surface.
In addition, the trochoidal surface that is positioned at the above-mentioned conical projection on the distal face of flat blade can be configured as the shape of on cross section convexity or concave.
On the other hand, two sidewalls that are positioned at the far-end of flat blade can be formed to such an extent that outwards widen, so as with screw on be formed to such an extent that the cutter head matching slot widened from screw head core radially outward matches.
In addition, at least one flat blade can have a notch, and it begins axially to stretch and have a predetermined length along cutter head from the blade distal face.
On the other hand, a kind of can being characterised in that with the screw that driver bit according to the present invention matches, it comprises: step part, they are provided on the end of cutter head matching slot of a screw head, the skewed slot part, and the core towards a screw neck stretches and forms from these step parts for they, a conical shaped bottom surface, it is formed on the screw bottom, and wall portion, and they are formed on the end of above-mentioned cutter head matching slot and inwardly concave a predetermined depth from vertical direction.
In this case, being formed on the wall portion of cutter head matching slot end can be recessed with the cross section of "＜" shape roughly.
In addition, the cutter head matching slot can be formed to such an extent that widen from the core radially outward of screw head, and the subtended angle between the wall portion that is facing with each other on above-mentioned adjacent each groove can be an acute angle that is slightly less than the right angle.
In addition, the screw as matching with driver bit according to the present invention can use a kind of cross/word screw, it is characterized in that, a screw head has the cutter head matching slot that is made of crossed grooves; A straight trough in the described intersection cutter head matching slot is shaped like this, and the blade of a Philip's head screw cutter head is engaged in wherein; Another straight trough is shaped like this, and the blade of a straight screwdriver head is engaged in wherein; Have the roughly vertical end wall portion of certain depth, they are formed on the end of an above-mentioned straight trough, and wall portion is being formed on the above-mentioned vertical end wall portion with the cross section of "＜" shape roughly on the predetermined depth and recessed from vertical direction.
In addition, the invention is characterized in the driver bit that will be in the above described manner forms and a kind of like this set screws altogether, this screw comprises: the end of the cutter head matching slot of screw head, and they are shaped as the vertical end wall portion with predetermined depth; Step part, they are formed on the lower edge portion office of vertical end wall portion; The skewed slot part, they tilt and form towards the core of a neck; A conical bottom surface, it is formed on the screw center.Screw is shaped like this, thereby makes above-mentioned cutter head matching slot widen from the core radially outward of screw head; And the subtended angle between the wall portion that is facing with each other on above-mentioned adjacent each groove is an acute angle that is slightly less than the right angle.
In addition, the invention is characterized in altogether driver bit and a kind of like this set screws, this screw comprises: horizontal bottom or skewed slot part, and they divide beginning to stretch and form towards the core of a screw neck from the lower edge portion of cutter head matching slot end on screw head; A conical bottom surface, it is formed on the screw core; And wall portion, they are formed on the end of above-mentioned cutter head matching slot and inwardly concave a predetermined depth from vertical direction.
In addition, the invention is characterized in that in this screw, a screw head has the cutter head matching slot that is made of crossed grooves with driver bit and a kind of cross/word set screws altogether; A straight trough in the described cutter head matching slot is shaped like this, and the blade of a Philip's head screw cutter head is engaged in wherein; Another straight trough is shaped like this, and the blade of a straight screwdriver head is engaged in wherein; And the roughly vertical end wall portion with certain depth is formed on the end of an above-mentioned straight trough.
In this case, above-mentioned cross/word screw can be shaped like this, and a straight trough in the promptly described cutter head matching slot is formed to such an extent that outwards significantly widen; In another straight trough, groove is formed to such an extent that outwards significantly widen; And the blade of a driver bit will touch each wall portion that is made of the above-mentioned groove of outwards widening simultaneously and with the gap that equates.
Brief Description Of Drawings
Fig. 1 is the major component enlarged side view according to a driver bit embodiment of the present invention;
Fig. 2 is the major component side enlarged perspective of driver bit shown in Figure 1;
Fig. 3 is the amplification inclinating view of driver bit shown in Figure 1;
Fig. 4 (a)-(d) is the schematic side elevation according to the various modified structures of driver bit distal portions of the present invention;
Fig. 5 has shown the another kind of modified structure according to driver bit of the present invention; (a) be the enlarged side view of its main body; (b) be its amplification inclinating view;
Fig. 6 has shown the configuration example that is fit to the screw that uses with driver bit according to the present invention; (a) be the amplification cross-sectional side view of screw head main body; (b) be the amplification plan view of screw head;
Fig. 7 is the amplification cross-sectional side view of driver bit according to the present invention its main body with screw fit shown in Figure 6 the time;
Fig. 8 has shown another configuration example of preferred and the screw that driver bit according to the present invention is used; (a) be the amplification plan view of screw head; (b) be the amplification cross-sectional plan view of the screw head main body that matches with driver bit;
Fig. 9 has shown another configuration example of preferred and the screw that driver bit according to the present invention is used; (a) be the amplification cross-sectional side view of screw head main body; (b) be the amplification plan view of screw head; (c) be the amplification cross-sectional side view of the screw head main body that matches with driver bit;
Figure 10 has shown the configuration example of the cross/slotted head screw that can use with driver bit according to the present invention; (a) be amplification plan view in order to the cross/slotted head screw head that shows a configuration example; (b) be amplification plan view in order to the cross/slotted head screw head that shows a modified structure;
Figure 11 has shown a kind of modified structure of screw shown in Figure 10; (a) be the amplification plan view of screw head; (b) be the amplification cross-sectional side view of screw head main body;
Figure 12 has shown a kind of bolt structure example and the driver bit thereof of conventional proposals; (a) be the enlarged side view of driver bit main body; (b) be conventional proposals a kind of bolt structure example main body and cooperate the amplification cross-sectional side view of driver bit; (c) be conventional proposals another kind of bolt structure example main body and cooperate the amplification cross-sectional side view of driver bit;
Figure 13 is the cross-sectional side view of the main body of the common cruciform slot screw of a kind of tradition;
Figure 14 is the screw head plan view of cruciform slot screw shown in Figure 13;
Figure 15 is the driver bit main body side view that is used for traditional common cruciform slot screw; And
Figure 16 is a cruciform slot screw main body shown in Figure 13 and driver bit shown in Figure 15 cross-sectional side view when being fitted to each other.
Most preferred embodiment of the present invention
Now by the embodiment to driver bit according to the present invention and screw composite structure explains in detail with reference to each accompanying drawing.
Embodiment 1(configuration example 1 of driver bit)
Fig. 1 to 3 has shown an embodiment according to driver bit of the present invention.Please refer to Fig. 1 to 3, code reference number 50 expressions are according to a driver bit of the present invention.The far-end of the blade of driver bit 50 is used for being engaged in cutter head matching slot 32, and the latter is configured as the cross recessed form in the core of the screw head 30a of conventional proposals screw 30 shown in Fig. 6 and 7.
Like this, the driver bit 50 in the present embodiment comprises flat blade 52, is complementary and interlock is formed on the vertical end wall portion 32a and the planar base 32b of cutter head matching slot 32 ends with the above-mentioned cutter head matching slot 32 with above-mentioned screw 30.Driver bit 50 also comprises the distal face or the conical projection 54 that are made of above-mentioned flat blade 52, its tilt angle theta with respect to the horizontal plane is 1 ° to 45 °, be preferably 25 ° to 35 °, with corresponding from the planar base 32b of above-mentioned cutter head matching slot 32 towards the inclination of screw neck 30b core with skewed slot part 32c.
By the way, code reference number 53 expression is formed on the wall portion on two sides of above-mentioned flat blade 52, and they are roughly vertical and allow to be slightly wedge shape.Like this, wall portion 53 can interlock contact be formed on wall portion 33 in the cutter head matching slot 32 of above-mentioned screw 30.Therefore, these drive surface can provide enough wide occlusal contact area, thereby preventing effectively that conventional screw and driver bit composite structure are caused deviates from phenomenon.
Fig. 4 (a)-(d) has shown the various modified structures that are formed on according to the conical projection 54 on the distal face of the flat blade 52 of driver bit 50 of the present invention respectively.That is to say that the trochoidal surface of the above-mentioned projection 54 shown in Fig. 4 (a) is shaped as single conical surface 54a.In addition, the trochoidal surface of the above-mentioned projection 54 shown in Fig. 4 (b) is shaped as respectively many steps (two steps) conical surface 54b of tilting with different amount.In addition, the trochoidal surface of the above-mentioned projection 54 shown in Fig. 4 (c) is shaped as convex face 54c on cross section.At last, the trochoidal surface of the above-mentioned projection 54 shown in Fig. 4 (d) is shaped as concave face 54d on cross section.
Embodiment 2(configuration example 2 of driver bit)
Fig. 5 (a) and (b) shown another embodiment according to the flat blade 52 of driver bit 50 of the present invention.That is to say that in the present embodiment, as Fig. 5 (a) with (b), have a notch 55 at least one flat blade 52, it has predetermined length and begins to stretch along the cutter head axis from the blade distal face.
On flat blade 52, provide such notch 55 will cause a blade section 52a to move from the axial centre part resilient radial of driver bit 50.All actions of blade section 52a are convenient to keep interlock between the cutter head matching slot 32 of driver bit and screw 30, as described later.
Embodiment 3(configuration example 1 of screw)
Fig. 6 (a) and (b) shown the configuration example that is fit to the screw 30 that uses with driver bit 50 according to the present invention.That is to say that at Fig. 6 (a) with (b), screw 30 has cutter head matching slot 32 on head 30a.By the way, described cutter head matching slot 32 at right angles intersects with cross (+) shape at the core of screw head 30a.On the other hand, cutter head matching slot 32 has formed the vertical end wall portion 32a with predetermined depth in its end.In addition, the core of planar base 32b from the lower limb part 32a ' of end wall portion 32a towards screw neck 30b stretches and forms.In addition, the core towards screw neck 30b stretches and forms skewed slot part 32c from planar base 32b.At last, the conical shaped bottom surface 34 of a slight inclination is formed on core.
By the way, the roughly vertical wall portion of code reference number 33 expressions, they are respectively formed between the adjacent tool tips matching slot 32 and have about 1.5 ° to 2 ° pattern draft (angle that head punch is therefrom extracted out).Like this, wall portion 33 contacts interlock according to the wall portion 53 on the flat blade 52 of above-mentioned driver bit 50 of the present invention.
In addition, formerly the technology screw is similar to band cross recessed shown in Figure 14, adjacent corners at above-mentioned cutter head matching slot 32 has formed wedge shape junction surface 37a, 37b, and they are stretched over the edge of opening part of the cutter head matching slot 32 of screw head 30a from the position of conical bottom surface 34.
The screw 30 of Xing Chenging has planar base 32b in the end of the cutter head matching slot 32 of screw head 30a like this, and skewed slot part 32c the core towards screw neck 30b stretches and forms from planar base 32b.Therefore the total area of the wedge shape contact segment of cutter head matching slot 32 has reduced, thereby can local contact driver bit.In addition, this can increase wall portion 33 and driver bit far-end at the contacted area in boundary portion office between adjacent tool tips matching slot 32,32 (surface area that is applied moment of torsion by driver bit in the screw, promptly driven surface area).
Fig. 7 has shown the sight of driver bit 50 according to the present invention when screw 30 cooperates with Fig. 6 (a) with (b).That is to say, in the present embodiment, as shown in Figure 7, suppose that the flat blade 52 that is formed on driver bit 50 far-ends contacts with cutter head matching slot 32 among the screw head 30a that is formed on screw 30.Because the distal face of flat blade 52 forms conical projection 54, therefore flat blade 52 will contact the edge of opening part of above-mentioned cutter head matching slot 32 in a very little area of being made up of point or line, thereby make that the core of the two can be quick and easily aligned with each other.This just may reduce the wearing and tearing and the damage of screw head, so that driver bit 50 directly and accurately cooperates with screw 30.
Embodiment 4(configuration example 2 of screw)
Fig. 8 (a) and (b) shown another configuration example of the screw 30 that preferred and driver bit 50 according to the present invention are used.That is to say that in the present embodiment, as Fig. 8 (a) with (b), groove 33a, the 33b in the cutter head matching slot 32 of screw 30 widened and form facing to beginning radially outward from screw head 30a each other.On the other hand, the wall portion 53 that is used for being complementary with groove 33a, 33b that is positioned at flat blade 52 far-ends of driver bit 50 is also outwards widened, with corresponding with the screw of such formation.That is to say that wall portion 53 is shaped like this, promptly wall portion 53a, 53b outwards widen.
The flat blade 52 of supposing driver bit 50 contacts with each wall portion (T1, T2, T3 and T4) in the cutter head matching slot 32 of screw 30, and groove 33a, the 33b of cutter head matching slot 32 outwards widen.In this case, form the wall portion 53a, the 53b that outwards widen at flat blade 52 far-ends of driver bit 50 and can make the gap between above-mentioned groove 33a, 33b and above-mentioned wall portion 53a, the 53b as far as possible little, so that coupling aptly between screw and the driver bit.In addition, subtended angle β between the adjacent wall that is facing with each other on each groove 33a, 33b part can be arranged to an acute angle that is slightly less than the right angle, thus guarantee to prevent driver bit 50 when tightening screw deviate from phenomenon and therefore and with the transmission of torque of equilibrium to screw 30.
Embodiment 5(configuration example 3 of screw)
Fig. 9 (a) and (b) and another configuration example that (c) has shown preferred and the screw 30 that driver bit 50 according to the present invention is used.That is to say that in the present embodiment, as Fig. 9 (a) with (b), the 32aa of wall portion is formed on the end of the cutter head matching slot 32 of screw 30 with the cross section of "＜" shape roughly, the 32aa of wall portion inwardly concaves a predetermined depth from vertical surface.Then, step part 32b ' stretches out along general horizontal direction from the lower limb part 32a ' beginning of the recessed 32aa of wall portion.In addition, the core towards screw neck 30b stretches and forms each skewed slot part 32c from step part 32b '.In addition, the conical shaped bottom surface 34 of a slight inclination is formed on the bottom.The screw 30 among the embodiment 3 is identical with Fig. 6 (a) with (b) for other shape.
According to the screw in the present embodiment 30, recessed 32aa of wall portion and step part 32b ' are provided at respectively on the end of cutter head matching slot 32 of screw head 30a.In addition, each skewed slot part 32c stretches and forms from the end of above-mentioned step part 32b ' towards the core of screw neck 30b.Therefore the total area of the wedge shape contact segment of cutter head matching slot 32 has reduced, thereby can local contact driver bit.In addition, this can increase wall portion 33 and driver bit far-end at the contacted area in boundary portion office between adjacent tool tips matching slot 32,32.
That is to say, according to present embodiment, shown in Fig. 9 (c), the far-end of the flat blade 52 of driver bit 50 is engaged among each step part 32b ' of cutter head matching slot 32 of screw 30, then, the wall portion 53 of above-mentioned blade far-end contacts with the wall portion 33 of the cutter head matching slot 32 of screw 30, afterwards, driver bit 50 rotation, thus with predetermined transmission of torque to screw 30.Specifically, according to the composite structure of the screw in the present embodiment 30 with driver bit 50, when the recessed 32aa of wall portion was formed on cutter head matching slot 32 ends of the screw 30 that is complementary with driver bit 50, the part recessed from vertical surface always can be used as a gap portion G.Like this, driver bit 50 effectively is engaged in wherein and dust particle in the blade matching slot 32 and foreign matter can be pushed among the above-mentioned gap portion G, thereby they are removed.This just can be easily mates the far-end of the flat blade of driver bit 50 and the cutter head matching slot 32 of screw 30 together securely.
In addition, according to the composite structure of the screw in the present embodiment 30 with driver bit 50, if when utilizing common Philip's head screw cutter head to tighten or unscrewing screw, damaged the open part side of cutter head matching slot 32, then above-mentioned driver bit 50 can push the smear metal that is deposited in the blade matching slot 32 among the gap portion G, thereby they are removed.Meanwhile, above-mentioned driver bit 50 can so that between the far-end of the flat blade of the bottom side of cutter head matching slot 32 and driver bit 50 aptly coupling tighten or unscrew operation to finish together.
In addition, composite structure according to screw 30 according to the present invention and driver bit 50, when attempting to insert driver bit 50 in the cutter head matching slot 32, even driver bit 50 with respect to the axial slight inclination of screw 30, also can be coupled to driver bit 50 in the cutter head matching slot 32 easily and securely.This is because the existence of the above-mentioned recessed wall 32aa of portion has improved the degrees of freedom of driver bit 50 far-ends.
Embodiment 6(configuration example 4 of screw)
Figure 10 (a) and (b) shown the configuration example that is fit to the screw 30 that uses with driver bit 50 according to the present invention.
That is to say that a cross shown in Figure 10 (a)/word screw 30A has a pair of at the core of screw head 30a straight trough 31a, 31b intersected with each other.According to the cross in the present embodiment/word screw 30A, above-mentioned straight trough 31a is used for forming in the end the vertical end wall portion 35a with predetermined depth.In addition, joint part 32b ' divides beginning to stretch and form along general horizontal direction from the lower edge portion of vertical end wall portion 35a.Then, the core towards the screw neck stretches and forms each skewed slot part 32c ' from step part 32b '.In addition, the conical shaped bottom surface 34 of a slight inclination is formed on the bottom.In addition, above-mentioned another straight trough 31b forms along horizontal stretching, and its width is enough to the blade that interlock contacts the Philip's head screw cutter head with the degree of depth.Therefore, also can be used for a cross/word screw 30A of formation like this according to driver bit 50 of the present invention.
Figure 10 (b) has shown a kind of modified structure of above-mentioned cross/word screw 30A.That is to say that in this case, in the straight trough 31a and another straight trough 31b of cross/word screw 30A, groove 33a ', 33b ' outwards widen and form, thereby corresponding with the blade 52 of above-mentioned driver bit 50.Because screw has this shape, therefore when the blade 52 of driver bit 50 matched with the cutter head matching slot of cross/word screw 30A, cross/word screw 30A can provide with Fig. 8 (a) and screw 30 identical functions and the effect in the foregoing description 4 (b).
Embodiment 7(configuration example 5 of screw)
Figure 11 (a) and (b) shown Figure 10 (a) and (b) shown in the another kind of modified structure of cross/word screw 30A.That is to say that in the present embodiment, as Figure 11 (a) with (b), the 32aa of wall portion is with respect to straight trough 31a of cross/word screw 30A and be formed on the end of cutter head matching slot 32 with the cross section of "＜" shape roughly.At this, the 32aa of wall portion inwardly concaves a predetermined depth from vertical surface.Like this, just formed and the identical cutter head matching slot 32 of screw 30 in the foregoing description 5 shown in Fig. 9 (a).
Therefore, the cross/word screw 30A that forms like this can provide with the foregoing description 5 in screw 30 identical functions and effect.
The front is described the preferred embodiments of the present invention.Yet the present invention is not limited to the various embodiments described above.For example, in above-mentioned each configuration example of screw, the present invention also can be implemented in pan head screw or the thread screw.In addition, each configuration example can be used in combination effectively.Therefore, obviously can believe, under the prerequisite that does not break away from spirit and scope of the present invention, can make various modifications.
From the foregoing description as can be seen, can cooperate such screw according to driver bit of the present invention, this screw comprises the vertical end wall portion with predetermined depth, described wall section is formed on the end of the cutter head matching slot of a screw head, wherein the general plane bottom core from the lower limb part of vertical end wall portion towards a screw neck stretches and forms, and a conical bottom surface is formed on the core.Driver bit comprises flat blade, they have roughly vertical end, be engaged in the cutter head matching slot of screw head along vertical end wall portion with a distal portions with them, it is characterized in that, a distal face of described flat blade is shaped as a conical projection, and it is with respect to the angle of one 1 ° to 45 ° of substantially horizontal inclination.When the far-end with driver bit matches with the cutter head matching slot, though the surface of above-mentioned flat blade sliding friction screw head, should the surface fully can be not impaired.In addition, the far-end of flat blade is engaged in the screw, thereby can prevent effectively that phenomenon from appearring deviating from driver bit when rotating.
In addition, according to the composite structure of a kind of driver bit of the present invention and screw, the flat blade that is formed on the driver bit far-end will contact with the cutter head matching slot of the screw head that is formed on screw.Because the far-end of flat blade is shaped as conical projection, therefore flat blade will contact the edge of opening part of above-mentioned cutter head matching slot in a very little area of being made up of point or line, thereby make that the core of the two can be quick and easily aligned with each other.This just may reduce the wearing and tearing and the damage of screw head, so that driver bit and screw directly and accurately cooperate.
In addition, at the far-end of the flat blade of driver bit, wall portion is formed to such an extent that outwards widen, and each wall portion in the cutter head matching slot of screw also is formed to such an extent that outwards widen.This can make the gap between driver bit and the screw as far as possible little.In addition, the subtended angle β between the part of the adjacent wall that is facing with each other on each groove can be arranged to an acute angle that is slightly less than the right angle.Therefore, can prevent effectively that driver bit from deviating from phenomenon and therefore can be with the transmission of torque of equilibrium to screw when tightening screw.
Claims (11)
1. driver bit that is used for screw, can match with a kind of screw, end at this screw head, be formed with vertical end wall portion and have the cutter head matching slot that roughly is the bottom on plane from the lower limb part of above-mentioned vertical end wall portion towards the core of screw neck with predetermined depth, simultaneously, make this notch form the shape of widening gradually, and on this core, form conical bottom surface from screw head core radially outward, it is characterized in that
Above-mentioned driver bit is formed with: have the flat blade in roughly vertical end, be configured to make the vertical end wall portion of above-mentioned flat blade along screw head, be engaged in the cutter head matching slot of screw head, and form two shapes that sidewall is widened gradually at radially outward of its far-end, match with notch with above-mentioned cutter head matching slot; And being positioned at conical projection on the distal face of flat blade, it is inclined to 25 ° to 35 ° angle with respect to substantially horizontal.
2. driver bit according to claim 1 is characterized in that, the conical projection that is positioned on the distal face of flat blade is shaped like this, and promptly its trochoidal surface is made into a single conical surface.
3. driver bit according to claim 1 is characterized in that, is positioned at the conical projection on the distal face of flat blade, and its trochoidal surface is shaped as the shape of convexity on cross section.
4. screw, it comprises:
Step part, they are arranged at respectively on the end of cutter head matching slot of screw head;
The skewed slot part, the core towards the screw neck stretches and forms from these step parts respectively for they;
A conical shaped bottom surface, it is formed on the screw bottom; And
Wall portion, they are formed on the end of above-mentioned cutter head matching slot, and inwardly concave predetermined depth from vertical direction respectively and form cross section and be the shape of "＜" roughly.
5. screw according to claim 4, it is characterized in that, the cutter head matching slot is formed to such an extent that widen from the core radially outward of screw head, and the subtended angle between the wall portion that is facing with each other on above-mentioned adjacent each groove is an acute angle that is slightly less than the right angle.
6. cross/word screw is characterized in that,
A screw head has the cutter head matching slot that is made of crossed grooves,
A straight trough in the described intersection cutter head matching slot is shaped like this, and the blade of a Philip's head screw cutter head is engaged in wherein,
Another straight trough is shaped like this, and the blade of a straight screwdriver head is engaged in wherein,
Roughly vertical end wall portion with certain depth is formed on the end of an above-mentioned straight trough, and
Wall portion is being formed on the above-mentioned vertical end wall portion with the cross section of "＜" shape roughly on the predetermined depth and recessed from vertical direction.
7. the composite structure of driver bit and screw is characterized in that comprising,
Screw comprises:
The end of the cutter head matching slot of screw head, they are shaped as the vertical end wall portion with predetermined depth,
Step part, they are formed on the lower edge portion office of vertical end wall portion,
The skewed slot part, they tilt and form towards the core of a neck,
A conical bottom surface, it is formed on the screw center,
The cutter head matching slot is widened from the core radially outward of screw head, and the subtended angle between the wall portion that is facing with each other on above-mentioned adjacent each groove is an acute angle that is slightly less than the right angle; And
Driver bit is formed with:
Has the flat blade in roughly vertical end, be configured to make the vertical end wall portion of above-mentioned flat blade along screw head, be engaged in the cutter head matching slot of screw head, and form two shapes that sidewall is widened gradually at radially outward of its far-end, match with notch with above-mentioned cutter head matching slot, and
Be positioned at the conical projection on the distal face of flat blade, it is inclined to 25 ° to 35 ° angle with respect to substantially horizontal.
8. the composite structure of driver bit and screw is characterized in that comprising,
Screw comprises:
Horizontal bottom or skewed slot part, they divide beginning to stretch and form towards the core of a screw neck from the lower edge portion of cutter head matching slot end on screw head,
A conical bottom surface, it is formed on the screw core, and
Wall portion, they are formed on the end of above-mentioned cutter head matching slot and inwardly concave a predetermined depth from vertical direction; And
Driver bit is formed with:
Has the flat blade in roughly vertical end, be configured to make the vertical end wall portion of above-mentioned flat blade along screw head, be engaged in the cutter head matching slot of screw head, and form two shapes that sidewall is widened gradually at radially outward of its far-end, match with notch with above-mentioned cutter head matching slot, and
Be positioned at the conical projection on the distal face of flat blade, it is inclined to 25 ° to 35 ° angle with respect to substantially horizontal; And
The cutter head matching slot of above-mentioned screw and the flat blade of driver bit all are formed the groove and the blade of terminal shape of widening gradually respectively, and contact simultaneously with the gap that equates.
9. the composite structure of a driver bit and cross/word screw is characterized in that comprising,
Screw, it has:
Screw head is provided with the cutter head matching slot that is made of crossed grooves,
A straight trough in the described cutter head matching slot is shaped like this, and the blade of a Philip's head screw cutter head is engaged in wherein,
Another straight trough is shaped like this, and the blade of a straight screwdriver head is engaged in wherein, and
Roughly vertical end wall portion with certain depth is formed on the end of an above-mentioned straight trough;
Driver bit is formed with:
Has the flat blade in roughly vertical end, be configured to make the vertical end wall portion of above-mentioned flat blade along screw head, be engaged in the cutter head matching slot of screw head, and form two shapes that sidewall is widened gradually at radially outward of its far-end, match with notch with above-mentioned cutter head matching slot, and
Be positioned at the conical projection on the distal face of flat blade, it is inclined to 25 ° to 35 ° angle with respect to substantially horizontal; And
The straight trough in the cutter head matching slot of above-mentioned screw and the flat blade of driver bit all are formed the groove and the blade of terminal shape of widening gradually respectively, and contact simultaneously with the gap that equates.
10. driver bit according to claim 1 is characterized in that, the conical projection that is positioned on the distal face of flat blade is shaped like this, and promptly its trochoidal surface is made into many steps conical surface.
11. driver bit according to claim 1 is characterized in that, the trochoidal surface that is positioned at the conical projection on the distal face of flat blade is shaped as the shape of concave on cross section.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04225098A JP4197546B2 (en) | 1998-02-24 | 1998-02-24 | Combination with screw and driver bit |
| JP42250/1998 | 1998-02-24 | ||
| JP11573998A JPH11311226A (en) | 1998-04-24 | 1998-04-24 | Combination of screw and driver bit |
| JP115739/1998 | 1998-04-24 | ||
| JP276248/1998 | 1998-09-29 | ||
| JP27624898A JP4394184B2 (en) | 1998-09-29 | 1998-09-29 | Combination with screwdriver bit and screw |
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| Publication Number | Publication Date |
|---|---|
| CN1291931A CN1291931A (en) | 2001-04-18 |
| CN1130276C true CN1130276C (en) | 2003-12-10 |
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ID=27291133
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99803241A Expired - Lifetime CN1130276C (en) | 1998-02-24 | 1999-02-23 | Screwdriver bit and its combination with screw |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US6378406B1 (en) |
| EP (2) | EP1493536B1 (en) |
| KR (1) | KR100563626B1 (en) |
| CN (1) | CN1130276C (en) |
| AT (2) | ATE314904T1 (en) |
| AU (1) | AU752248B2 (en) |
| CA (1) | CA2321711C (en) |
| DE (2) | DE69929304T2 (en) |
| HK (1) | HK1036245A1 (en) |
| TW (1) | TW399126B (en) |
| WO (1) | WO1999043472A1 (en) |
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| JP3671080B2 (en) | 1995-12-22 | 2005-07-13 | 勝行 戸津 | Screws and driver bits as well as header punches for screw production |
| US5660091A (en) * | 1996-02-06 | 1997-08-26 | Walter Lorenz Surgical, Inc. | Blunt-nosed, self-retaining screwdriver |
| US6223634B1 (en) * | 1997-10-03 | 2001-05-01 | Phillips Screw Company | Recessed head fastener and driver systems |
-
1999
- 1999-02-23 AT AT99903935T patent/ATE314904T1/en not_active IP Right Cessation
- 1999-02-23 US US09/622,865 patent/US6378406B1/en not_active Expired - Lifetime
- 1999-02-23 CN CN99803241A patent/CN1130276C/en not_active Expired - Lifetime
- 1999-02-23 AU AU24412/99A patent/AU752248B2/en not_active Ceased
- 1999-02-23 DE DE69929304T patent/DE69929304T2/en not_active Expired - Lifetime
- 1999-02-23 EP EP04023163A patent/EP1493536B1/en not_active Expired - Lifetime
- 1999-02-23 WO PCT/JP1999/000817 patent/WO1999043472A1/en active IP Right Grant
- 1999-02-23 KR KR1020007009158A patent/KR100563626B1/en active IP Right Grant
- 1999-02-23 EP EP99903935A patent/EP1080846B1/en not_active Expired - Lifetime
- 1999-02-23 CA CA002321711A patent/CA2321711C/en not_active Expired - Fee Related
- 1999-02-23 DE DE69934032T patent/DE69934032T2/en not_active Expired - Lifetime
- 1999-02-23 AT AT04023163T patent/ATE345197T1/en not_active IP Right Cessation
- 1999-04-23 TW TW088106482A patent/TW399126B/en active
-
2001
- 2001-09-27 HK HK01106825A patent/HK1036245A1/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01141914U (en) * | 1988-03-24 | 1989-09-28 | ||
| JPH0353611U (en) * | 1989-10-02 | 1991-05-23 | ||
| DE4300446A1 (en) * | 1992-12-22 | 1994-06-23 | Werner Hermann Wera Werke | Tools, especially screwdriver bits |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102859212A (en) * | 2010-04-16 | 2013-01-02 | 日东精工株式会社 | Screw driving hole |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2441299A (en) | 1999-09-15 |
| EP1493536A2 (en) | 2005-01-05 |
| EP1080846B1 (en) | 2006-01-04 |
| KR100563626B1 (en) | 2006-03-22 |
| CA2321711C (en) | 2007-12-11 |
| ATE345197T1 (en) | 2006-12-15 |
| EP1080846A4 (en) | 2002-05-15 |
| CA2321711A1 (en) | 1999-09-02 |
| EP1493536A3 (en) | 2005-07-13 |
| EP1493536B1 (en) | 2006-11-15 |
| TW399126B (en) | 2000-07-21 |
| DE69929304D1 (en) | 2006-03-30 |
| KR20010041117A (en) | 2001-05-15 |
| WO1999043472A1 (en) | 1999-09-02 |
| EP1080846A1 (en) | 2001-03-07 |
| DE69929304T2 (en) | 2006-08-31 |
| CN1291931A (en) | 2001-04-18 |
| ATE314904T1 (en) | 2006-02-15 |
| DE69934032D1 (en) | 2006-12-28 |
| US6378406B1 (en) | 2002-04-30 |
| AU752248B2 (en) | 2002-09-12 |
| DE69934032T2 (en) | 2007-06-06 |
| HK1036245A1 (en) | 2001-12-28 |
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